I really don't buy into these cost estimates that sprout up around these device launches, and particularly this one.
It's comparing to RETAIL cost, when really what matters is wholesale cost.
If the PS3 retailed for $599, it was likely at wholesale cost to retail stores for about $299 (50% typical markup, or maybe $350 or $400 if Sony really leveraged their relationships)
If Sony was using a distributor then they likely sold to the distributor at 20% less than that.
So really their loss on each unit would have been ENORMOUS
However I think it's much more likely they were selling at a much less loss, and the COG estimates are just bogus. So much of those numbers are dependent on volume, and that's the hardest thing to gauge for these types of estimations.
However it can be expected for a console launch of the magnitude of the PS3, Sony will have been buying these components in LARGE volume.
I particularly don't buy the $125 Blu-ray drive, since that is Sony's own technology, and they aren't going to charge themselves a licensing fee.
A lot of time I see these COGs estimates they are more inline with consumer retail prices than the high volume OEM prices the manufacturer is paying.
Like the power supply costing $37, that would mean that if that power supply would be sold retail it would have to cost $100, doesn't seem realistic that it would cost Sony that much to make their own power supply. There's other hilarious line items like "Other components and manufacturing" listed for $148! I think a little more granularity would be useful there!
There's also so much untold story in this (and most) BOM estimates I see, which is the way all the accounting is done. What does the "manufacturing cost" include? What about handling, distribution, overhead? There's so many layers to understanding profitability.
What is easier to determine is the GROSS MARGIN, and that should not be confused with the overall profitability. It's also why we can't trust these ex-engineers extrapolating and saying the company is losing X billions of dollars, because unless they were a Finance executive they likely don't understand the true costs and profitability, how things are being amortized, etc.
These same gripes I have apply to the iPhone BOM estimates and many others. Take them with a grain of salt!